Split clencher demountable rim and locking and alining device therefor.



W. N. BOOTH.

SPLIT CLENCHER DEMOUNTABLE RIM AN!) LOCKING AND mums nEwcE THEREFOR.

APPLICAHON FILED DEC. 19. I911.

1,240,789, Patented Spt. 18,1917.

1%7uame s UNITED STATES PATENT OFFICE.

WILLIAM 1w. BOOTH, or DETROIT, MICHIGAN, Assmnon '10 xELsnt wmmr. 0611mm me, or Jam-non, MICHIGAN. a conronanon or nsw ronx.

srm'r cnmwonnn balloon-rants mm AND Locxme AND Lemma THEREFOR.

Application filed December 19, 1911.

To all whom it may concern:

Be it known that 1, WILLIAM N. Boh'ru, a citizen of the United States, and resident of Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Split Clehcher Demountable Rims and Looking and Alining Devices Therefor, of which I hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertans to make and use the same.

The invention comprises means for enabiing the split rim of a tire to be separated for the attachment of the tire, said means [serving also to rigidly connect and absolutely aline the several parts together.

The device is also useful and practical for securing a removable andinsertible portion of a rim to the main portion, so that the alinement of the several parts of the rim is maintained under all conditions of strain and shock and the rim will operate substantially as one rigid and integral part.

The removal of a short portion from a. split rim permits the rim to be collapsed when it is desired to place a tire thereon or to remove the same, but heretofore great difiiculty has been experienced in rigidly connecting the removable portion with the open ends of the rim, and m securing them and abutting them in perfect alinemcnt with each other.

When no removable portion is provided the open extremities of the rim can he rig-' idly siwu'cd together and maintained in perfect 'alinement with each other, by improvcd means hereinafter described, and the cxtremities'can be separated after they are released by pressing them inwardly and then separating-them laterally.

If there is any wantof rigidity in the securing means the meetlng parts are continually getting out of 'alinement' and the soft tire is then cut. or torn by the projecting edges.

The securing means is such'as to hold the meeting edges of the rim, or rim and insorted section in perfect alinement circumferentially and laterally, so that no projecting edges can occur. 0

The invention relates to a split tire rim th t. can he used in connection with my demounting device for fixed and demountable Specification of Letters Patent.

nnvron Patented Sept 18, 1917. Serial No. 666,832.

rims for which I have obtained Letters Patent dated April 12, 1909, and bearing Numher 954,416, and also described in my pre- .vious application for demounting device those on the other portion, and inclosed hetween the side walls of the .ehanneled fixed rim. 1 i I These series of interlocking lugs are pierced with registering openings andwa. continuous taper opening extending through all of them and throughthis opening a. tapered pin is passed before attaching the demountable rim to'the fixed rim ,to absolutely aline the edges of the rim and secure them together'with absolute rigidity;

One wall of the channeled rim is provided with an opening through which the interlocking lugs are introduced into the channel, and the large end of the tapered pin rests against the inner surface of the opposite wall of the channel so that the pip cannot be w thdrawn except after removing 'the outer rim from the innerone.

The invention is illustrated in detail in the accompanying drawings, is hereinafter more fully described in connection therewith, and specifically pointed out in the claims.

In the accompanying drawings Figure' 1;"

is a side elevation of a portion of th'eQoiitet and inner rims, showing the. lockingdvice for the extremities of the inserted with the extremity of the outer rim; ig. 2 is a plan view of the interlocking parts of the outer rim and inserted portion on the inside of the rim; Fig. 3 is a side elevation of the entire rim; Fig. 4 is an enlarged transverse section of both rims on the center line of the split between the open extremities of the split rim.

In these views 1 is the split outer rim, 9 is ortioh' the rigid fixed rim provided with theout- Wlrdly extending circumferential marginal side walls 3, 3' .mclosing the channel 4 bol 6,6 are in s extendmg from the respective ends of tie split rim toward each other and interlocking with each other when the ends are closed together. y e

A continuous tapered opening 7 is bored and reamed out through all the lugs U and 6' when they are interlocked and a tapered pin Sis intfiodueed therein which preferably projects slightly from the side of the outer in on that side.

ne side wall 3 is provided with an opening 8' corresponding in general shape with that of the lugs and through this opening the lugs are introduced into the channel. 4. T he 'butt T orwidest end of the tapered pin is placed against the opposite wall 3' of the channel when the Outer rim is put in place and hence the pin cannot be withdrawn or the split rim extremities separated until the rims are separated from each other.

The lugs (i, a are preferably integral with flat plates 11 and 12 which are secured to the undcrsides of the extremities of the split rim and these plates are welded, brazed or .iveted upon the rim. Hcrctot'ore the rims havegenerally been scparatedat the split to permit of contraction or have had inclined engaging edges permitting one end toslide upon the other when collapsed. Here the recess 8' in the felly hand or rim engages the .plates 11 and 12 and without the pin 8 would prevent the split ends of the rim from separating and the tire holding ring from creeping in the felly rim.

Therim cr'l interlocking plates are in separable end to cnd abntment upon the inner periphery of the'rlln and are rigidly secured y welding 0% otherwise to the respectiven'ds of the rim'thus bringing the ends of the rim into positive abutment with each other. The pin '8 gives an added security to the fastening device.

Except for the purpose of retaining the ends of the rim together when it is removed I from the telly rim or hand the pin 8 is not positively required and can therefore be dispensed with if desired, since the engagement of the plates 11 and 12 with the ends of the recess 8' in' the folly rim or band from separating.

a p i will prevent the ends of the ti holding rim The eyes 6, overlap the opposed extremities of the rim and hence serve to prevent: the ends from flying outward in case the )in should be lost.

The fact that the plates interlock upon an irregular line at the split in the rim opposes lateral so iaration of the rim ends.

The lateral e ges 13 and 1.1 of these plates are tapered inwardly so as to easily enter the opening 8' and are reversely tapered t0 the'ta 'ier of the pin.

1n the figures are also shown the wedging lugs 20, 20, on the outer rim, which enter openings 21, 21 in one wall of the channel and engage corresponding surfaces 22, 22 in the channel on the fixed rim as described in the aforesaid Letters Patent.

Having described the invention what I claim as new and desire to secure by Letters Patent is:

l. The combination with a fixed integral channeled rim, of a split deniountahle rim sleeved thereon and closely engaging the channeled edges thereof, rigid interlocking in upon the margins of the ends of said spit rim", and inclosed in said channeled rnn, said lugs having continuous tapered openings therethrough, the said channeled rim provided with a lateral opening in one wall through which said lugs are inserted, a tapered pin inserted in the said tapered openings, the large end of said tapered pin alm-tting'a ainst the inner surface of the channel wa l, opposite said opening, whereby said tapered pin is prevented from escaping.

2. The combination with a fixed channeled rim, and a split demountable rim sleeved thereover, of a series of lugs upon one extremity of said split rim, and a series of lugs upon the other extremity of said split. rim interlocking with said aforesaid series of lugs, means for detachably securing said series of lugs together, said lugs 100 inclosed between the walls ofsaid channel, one of. the side walls of said channeled rim serving to engage and prevent the displacement of said securing means, when the rim parts are interlocked.

.In testimony whereof, I hereunto set my hand this 20th day of November, 1911.

WILLIAM N. BOOTH. 

